Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica
The most effective way of determining the rate of elevation change of the Earth's large ice sheets using radar altimeters is to examine the difference in the elevation measured on ascending and descending orbits. This crossover difference has a static and time-varying component, and by isolatin...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | https://discovery.ucl.ac.uk/id/eprint/1492957/ |
id |
ftucl:oai:eprints.ucl.ac.uk.OAI2:1492957 |
---|---|
record_format |
openpolar |
spelling |
ftucl:oai:eprints.ucl.ac.uk.OAI2:1492957 2023-12-24T10:11:31+01:00 Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica Armitage, TWK Wingham, DJ Ridout, AL 2014-07 https://discovery.ucl.ac.uk/id/eprint/1492957/ eng eng https://discovery.ucl.ac.uk/id/eprint/1492957/ IEEE Geoscience and Remote Sensing Letters , 11 (7) pp. 1295-1299. (2014) CryoSat-2 ice sheets radar altimetry Article 2014 ftucl 2023-11-27T13:07:27Z The most effective way of determining the rate of elevation change of the Earth's large ice sheets using radar altimeters is to examine the difference in the elevation measured on ascending and descending orbits. This crossover difference has a static and time-varying component, and by isolating the time-varying part, one can construct a time series of the ice sheet elevation change. The static component of the crossover difference arises as a result of an anisotropic dependence of the extinction coefficient on the angle between the radar polarization and wind-induced features of the firn. Here, the static crossover difference observed by CryoSat-2 over the Antarctic ice sheet is examined, and a simple model is developed to explain the observed pattern. There is an excellent agreement between the modeled results and the observations, calling into question the results of previous studies of the same phenomenon with different radar altimeters. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet University College London: UCL Discovery Antarctic The Antarctic |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
CryoSat-2 ice sheets radar altimetry |
spellingShingle |
CryoSat-2 ice sheets radar altimetry Armitage, TWK Wingham, DJ Ridout, AL Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica |
topic_facet |
CryoSat-2 ice sheets radar altimetry |
description |
The most effective way of determining the rate of elevation change of the Earth's large ice sheets using radar altimeters is to examine the difference in the elevation measured on ascending and descending orbits. This crossover difference has a static and time-varying component, and by isolating the time-varying part, one can construct a time series of the ice sheet elevation change. The static component of the crossover difference arises as a result of an anisotropic dependence of the extinction coefficient on the angle between the radar polarization and wind-induced features of the firn. Here, the static crossover difference observed by CryoSat-2 over the Antarctic ice sheet is examined, and a simple model is developed to explain the observed pattern. There is an excellent agreement between the modeled results and the observations, calling into question the results of previous studies of the same phenomenon with different radar altimeters. |
format |
Article in Journal/Newspaper |
author |
Armitage, TWK Wingham, DJ Ridout, AL |
author_facet |
Armitage, TWK Wingham, DJ Ridout, AL |
author_sort |
Armitage, TWK |
title |
Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica |
title_short |
Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica |
title_full |
Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica |
title_fullStr |
Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica |
title_full_unstemmed |
Meteorological Origin of the Static Crossover Pattern Present in Low-Resolution-Mode CryoSat-2 Data Over Central Antarctica |
title_sort |
meteorological origin of the static crossover pattern present in low-resolution-mode cryosat-2 data over central antarctica |
publishDate |
2014 |
url |
https://discovery.ucl.ac.uk/id/eprint/1492957/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_source |
IEEE Geoscience and Remote Sensing Letters , 11 (7) pp. 1295-1299. (2014) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/1492957/ |
_version_ |
1786166231144857600 |